Problems

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Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
0-1 Sequences 9373 1418 15% 0.00 1860 954 51% 5.7
10 Kinds of People 21553 4365 20% 0.01 3678 2664 72% 4.9
2, 4, 6, Greaaat 533 87 16% 0.19 48 28 58% 8.7
2048 9045 4192 46% 0.00 4021 3447 86% 2.2
3-Sided Dice 2640 214 8% 0.00 429 152 35% 8.7
3D Printed Statues 11219 5204 46% 0.00 4786 4290 90% 1.9
3D Printer 850 145 17% 0.00 343 110 32% 8.8
4 thought 10085 3411 34% 0.00 3329 2802 84% 2.4
A Brief Gerrymander 492 101 21% 0.12 88 43 49% 8.8
A Classy Problem 10787 2780 26% 0.01 2412 1855 77% 4.4
A Different List Game 7190 499 7% 0.00 927 180 19% 9.2
A Different Problem 34054 12557 37% 0.00 11579 10029 87% 2.3
A Favourable Ending 1791 472 26% 0.00 439 340 77% 4.5
A Feast For Cats 2738 1025 37% 0.00 706 603 85% 3.9
A Flea on a Chessboard 595 131 22% 0.01 142 104 73% 5.1
A Horse Shoe-In 85 8 9% 0.45 13 7 54% 8.1
A List Game 9351 2793 30% 0.00 2662 2246 84% 2.9
A Mazing! 3052 673 22% 0.09 332 247 74% 5.7
A Multiplication Game 978 383 39% 0.00 408 312 76% 4.4
A New Adventure 1111 169 15% 0.00 188 127 68% 6.2
A New Alphabet 12093 5425 45% 0.00 5057 4669 92% 1.7
A+B Problem 8593 842 10% 0.03 1197 403 34% 8.2
A1 Paper 5793 1726 30% 0.00 1706 1353 79% 3.7
ABC 15178 6985 46% 0.00 6545 5961 91% 1.7
ACM Contest Scoring 7344 4570 62% 0.00 4073 3842 94% 1.5
AI Jeopardy 429 49 11% 0.02 51 36 71% 7.8
Aaah! 30535 14212 47% 0.00 12689 11839 93% 1.5
Ab Initio 1221 227 19% 0.09 184 112 61% 7.7
Abandoned Animal 2125 461 22% 0.03 533 386 72% 5.2
Above Average 10302 4207 41% 0.00 4047 3617 89% 2.3
Abstract Art 386 125 32% 0.00 103 79 77% 5.5
Abstract Painting 459 180 39% 0.00 154 121 79% 4.6
Absurdistan Roads II 663 226 34% 0.00 222 148 67% 6.9
Absurdistan Roads III 1619 467 29% 0.02 438 334 76% 5.5
Access Points 421 147 35% 0.01 140 108 77% 5.9
Accounting 349 134 38% 0.02 98 80 82% 4.6
Add 'Em Up! 1245 339 27% 0.01 324 252 78% 4.1
Adding Words 11614 2845 24% 0.00 2752 2149 78% 3.2
Adjoin the Networks 2248 596 27% 0.00 498 399 80% 5.5
Administrative Difficulties 1465 291 20% 0.03 314 215 68% 6.2
Ads 627 42 7% 0.00 93 26 28% 5.8
Advanced Causal Measurements 118 37 31% 0.10 34 28 82% 6.0
Adventure Begins 278 87 31% 0.06 94 70 74% 5.4
Adventures in Moving -- Part IV 1593 358 22% 0.00 305 258 85% 4.4
Air Conditioned Minions 5583 1589 28% 0.00 1641 1260 77% 3.6
Airline Hub 2214 489 22% 0.01 427 253 59% 6.7
Airport Coffee 931 200 21% 0.08 192 135 70% 7.0
Airport Construction 3524 453 13% 0.02 381 203 53% 7.6
Airport Logistics 67 15 22% 0.00 22 15 68% 7.3
Airports 487 150 31% 0.11 131 94 72% 6.6
Akcija 8103 3636 45% 0.00 3301 2946 89% 2.0
Aladin 773 78 10% 0.10 129 30 23% 8.5
Alchemy 138 26 19% 0.02 36 21 58% 7.5
Alea iacta est 45 16 36% 0.19 20 15 75% 6.5
Alehouse 309 113 37% 0.03 95 70 74% 6.0
Alex and Barb 418 165 39% 0.00 187 147 79% 2.9
Alice in the Digital World 5303 1295 24% 0.01 1177 922 78% 3.9
Alien Codebreaking 265 14 5% 3.23 42 11 26% 9.3
Alien Numbers 2545 1343 53% 0.00 1315 1201 91% 2.0
All Different Directions 1494 657 44% 0.00 616 547 89% 2.5
All Friends 1083 205 19% 0.00 183 99 54% 8.8
All Just A Dream 2217 550 25% 0.05 413 312 76% 5.2
All Kill 56 46 82% 0.00 35 31 89% 3.3
All Pairs Shortest Path 11596 2152 19% 0.00 1369 973 71% 5.2
All about that base 2988 1179 39% 0.00 1144 965 84% 2.9
All is Well 90 27 30% 0.03 25 23 92% 4.7
Allergy Test 569 148 26% 0.00 176 90 51% 7.7
Alloys 367 121 33% 0.00 133 108 81% 5.4
Almost Perfect 8734 2049 23% 0.00 2170 1720 79% 3.3
Almost Union-Find 8119 1376 17% 0.02 1296 738 57% 6.2
Alphabet 1844 940 51% 0.00 940 797 85% 3.2
Alphabet Animals 2361 724 31% 0.00 706 572 81% 3.3
Alphabet Spam 9091 5618 62% 0.00 4638 4455 96% 1.4
Alternative Anagram 148 60 41% 0.00 44 36 82% 5.2
Alternative Bracket Notation 209 89 43% 0.00 95 79 83% 5.1
Altruistic Amphibians 478 125 26% 0.22 107 78 73% 5.2
Amalgamated Artichokes 4336 1950 45% 0.01 1717 1506 88% 2.7
Amanda Lounges 1574 470 30% 0.03 415 334 80% 5.3
Amazing Adventures 387 106 27% 0.02 119 86 72% 6.2
Amazing Race 349 93 27% 0.29 99 69 70% 7.5
Ambiguous Result 269 59 22% 0.02 90 56 62% 7.8
Amsterdam Distance 1701 801 47% 0.00 827 696 84% 2.7
An I for an Eye 891 241 27% 0.00 274 202 74% 4.8
An Industrial Spy 1888 1023 54% 0.02 795 691 87% 3.0
Anagram Counting 4127 1613 39% 0.00 1552 1310 84% 2.6
Andrew the Ant 360 101 28% 0.05 110 85 77% 4.1
Animal Classification 1595 365 23% 0.03 314 209 67% 6.8
Another Brick in the Wall 3541 1803 51% 0.00 1741 1594 92% 1.9
Another Candies 8604 2368 28% 0.00 2419 2009 83% 2.7
Another Coin Weighing Puzzle 377 122 32% 0.00 103 88 85% 4.5
Another Dice Game 108 69 64% 0.00 67 58 87% 4.7
Another Query on Array Problem 1768 225 13% 0.05 354 159 45% 7.7
Antenna Placement 168 71 42% 0.00 55 43 78% 6.4
Anthony and Cora 979 262 27% 0.00 309 216 70% 5.4
Anthony and Diablo 3552 1267 36% 0.00 1288 1118 87% 2.6
Antiarithmetic? 1749 312 18% 0.01 392 222 57% 7.4
Ants 4103 1834 45% 0.00 1474 1295 88% 2.5
Apaxiaaaaaaaaaaaans! 14778 8802 60% 0.00 7853 7491 95% 1.6
Apostrophe Catastrophe 120 30 25% 0.00 32 21 66% 6.3
Appalling Architecture 768 224 29% 0.00 197 163 83% 4.2